Nodal growth differentiation factor (NODAL)

Nodal growth differentiation factor (NODAL) is a secreted signaling protein that belongs to the transforming growth factor beta superfamily (TGF-β superfamily)[1][3]. It is encoded by the NODAL gene located on chromosome 10q22.1 in humans. NODAL is critically involved in embryonic development: it regulates mesoderm and endoderm formation, patterning of the anterior-posterior and left-right axes, and initiates and sustains gastrulation[1][2]. Its signaling requires binding to type I and type II serine/threonine kinase receptors (with co-receptor Cripto-1), activating SMAD2/3 and subsequently triggering the transcription of target genes relevant to proliferation, differentiation, and stem cell maintenance[1][2][3]. Tight regulation (by antagonists such as Lefty, Cerberus, and others) is necessary to avoid developmental errors. In adults, aberrant NODAL expression is associated with pathologies including cancers and congenital organ placement disorders (heterotaxy)[3][9]. Inhibition or modulation of NODAL is being explored in preclinical cancer therapy, but no clinically approved drugs target NODAL specifically to date, and safety concerns are prominent due to its role in stem cell regulation and tissue development[3][6].

Other names

Nodal homologHTX5NODAL

Inhibition of NODAL signaling can block SMAD2/3 phosphorylation, altering gene expression involved in development and cancer progression[1][3][6]. Antibodies or inhibitors can prevent NODAL-receptor (Activin type I/II) interactions, thereby blocking downstream effects.